Differential susceptibility of a few members of the nasuta–albomicans complex of Drosophila to paraquat-induced lethality and oxidative stress

Genome ◽  
2011 ◽  
Vol 54 (10) ◽  
pp. 829-835 ◽  
Author(s):  
Mysore S. Ranjini ◽  
Ravikumar Hosamani ◽  
Muralidhara ◽  
Nallur B. Ramachandra
Keyword(s):  
Oxidative Stress ◽  
Biochemical Analysis ◽  
Reduced Glutathione ◽  
Differential Susceptibility ◽  
Activity Levels ◽  
Oxygen Species ◽  
Stress Markers ◽  
The Status ◽  
Markers Of Oxidative Stress ◽  
And Oxidative Stress

The evolution of karyotypically stabilized short-lived (SL) and long-lived (LL) cytoraces in the laboratory have been established and validated through our previous lifespan studies. In the present investigation, we examined the possible reason(s) for the differential longevity among selected members of SL and LL cytoraces, employing the well known paraquat (PQ) resistance bioassay. Exposure of these races to varying concentrations of PQ revealed relatively higher resistance among LL cytoraces than SL cytoraces, as evident by the lower incidence of mortality. Biochemical analysis for endogenous markers of oxidative stress revealed that LL-2 cytorace exhibited lower reactive oxygen species (ROS) and lipid peroxidation (LPO) levels, higher activity levels of superoxide dismutase (SOD), and coupled with higher levels of reduced glutathione (GSH) compared with the levels found in SL-2 cytorace. These findings suggest that the higher susceptibility of SL cytoraces to PQ challenge may be, at least in part, related to the higher endogenous levels of oxidative stress markers. Although the precise mechanisms responsible for the longer longevity among LL cytoraces of the nasuta–albomicans complex of Drosophila merits further investigation, our data suggest that the relatively longer lifespan may be related to the status of endogenous markers that renders them more resistant towards oxidative-stress-mediated lethality, as evident in the PQ assay.

scholarly journals Correlation between the Activity of Aldehyde Dehydrogenase and Oxidative Stress Markers in the Saliva of Diabetic Patients

2019 ◽  
Vol 27 (1) ◽  
pp. 67-73
Author(s):  
Hina Younus ◽  
Sumbul Ahmad ◽  
Md. Fazle Alam
Keyword(s):  
Oxidative Stress ◽  
Aldehyde Dehydrogenase ◽  
Early Stage ◽  
Control Group ◽  
Diabetic Patients ◽  
Oxidative Stress Markers ◽  
Stress Markers ◽  
Patients With Diabetes ◽  
Markers Of Oxidative Stress ◽  
And Oxidative Stress

Background: Reactive aldehydes are involved in diseases associated with oxidative stress, including diabetes. Human salivary aldehyde dehydrogenase (hsALDH) presumably protects us from many toxic ingredient/contaminant aldehydes present in food. Objective: This study aimed to probe the activity of hsALDH in patients with diabetes and than to correlate it with various oxidative stress markers in the saliva. Methods: The saliva samples were collected from total 161 diabetic patients from Rajiv Gandhi Centre for Diabetes, Jawaharlal Nehru Medical College (JNMC), AMU, Aligarh, (India). HsALDH activity and markers of oxidative stress [8-hydroxydeoxyguanosine (8-OHDG), malondialdehyde (MDA) and advanced glycation end products (AGEs)] were measured in the saliva samples. Results: Patients with early stage of diabetes had higher activity of hsALDH when compared with the control group. As the history of diabetes increases, the activity of the enzyme decreases and also higher oxidative stress markers (8-OHDG, MDA and AGEs) are detected in the saliva samples. Negative significant correlation between hsALDH activity and oxidative stress markers were observed (p <0.0001). Conclusion: The activity of hsALDH increases in early stages of diabetes most probably to counter the increased oxidative stress associated with diabetes. However, in later stages of diabetes, the activity of the enzyme decreases, possibly due to its inactivation resulting from glycation.

Evaluation of hepatic and renal effects in rat dams and their offspring after exposure to paracetamol during gestation and lactation

2020 ◽  
Vol 32 (18) ◽  
pp. 1301
Author(s):  
Andréa Morgato de Mello Miyasaki ◽  
Camila Rigobello ◽  
Rodrigo Moreno Klein ◽  
Jefferson Crespigio ◽  
Karina Keller Flaiban ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Biochemical Analysis ◽  
Renal Toxicity ◽  
Reduced Glutathione ◽  
Antioxidant Response ◽  
Maternal Serum ◽  
Oxidative Stress Markers ◽  
Renal Effects ◽  
Assessment And Evaluation ◽  
Stress Markers

Paracetamol (PAR) is the analgesic and antipyretic of choice for pregnant and nursing women. PAR may reach the fetus and/or neonate through the placenta and/or milk and effect development. This study evaluated possible hepatic and renal effects in rat dams and their offspring exposed to PAR using a human-relevant route of administration and doses from Gestational Day 6 to Postnatal Day (PND) 21. Dams were gavaged daily with PAR (35 or 350mg kg−1) or water (CON). Dams and pups were killed on PND21 and 22 respectively, and blood was collected for biochemical analysis (aspartate aminotransferase (AST), alanine aminotransferase (ALT), urea and creatinine). The kidneys and liver were isolated and processed for histopathological assessment and evaluation of oxidative stress markers. Compared with the CON groups, pups exposed to 350mg kg−1 PAR had increased renal reduced glutathione (GSH), whereas dams exposed to both doses of PAR increased serum AST. PAR administration did not affect parameters of general toxicity or renal and hepatic oxidative stress. In conclusion, maternal exposure to human-relevant doses of PAR by gavage was not associated with hepatic or renal toxicity in the pups or dams, but PAR was not devoid of effects. Exposure to PAR increased renal GSH in pups, which could suggest an adaptive antioxidant response, and affected maternal serum AST activity.

scholarly journals RELATIONSHIP OF TELOMERE LENGTH, TELOMERASE ACTIVITY, AND OXIDATIVE STRESS MARKERS IN PATIENTS WITH CEREBRAL ATHEROSCLEROSIS AND TYPE 2 DIABETES

2019 ◽  
Vol 4 (9-10) ◽  
pp. 117-127
Author(s):  
M. S. Yehorova ◽  
D. S. Krasnienkov ◽  
V. G. Gurianov ◽  
V. Ye. Kondratiuk ◽  
V. М. Kuharskiy
Keyword(s):  
Oxidative Stress ◽  
Type 2 Diabetes ◽  
Telomere Length ◽  
Telomerase Activity ◽  
Stress Markers ◽  
Cerebral Atherosclerosis ◽  
Markers Of Oxidative Stress ◽  
Stage 1 ◽  
And Oxidative Stress

The aim of study is to determine the relationship between telomere length and telomerase activity with indicators of oxidative stress in patients with stage 1-3 cerebral atherosclerosis and type 2 diabetes. Material and methods. A total clinical and instrumental study involved 161 patients with grade 1–3 CA. Telomerase activity was determined using a tandem repeat amplification protocol with real-time detection. The relative telomere lengths were measured using real-time multiplex quantitative polymerase chain reaction. Results. A comparative analysis revealed that patients with stage 1-3 CA with long telomeres had a significantly higher catalase level than in the short telomere group, and the catalase and SOD levels in the group with high telomerase activity were significantly lower than in the group with low telomerase activity. A correlation analysis revealed significant direct relationships between telomere length and oxidative stress markers such as catalase and SOD (r = 0.23 and r = 0.21, respectively) and telomerase activity with GSH (r = 0.48). An inverse relationship between the telomere length and T2DM (r = -0.21) was also revealed. Telomere length and telomerase activity were not correlated with other markers of oxidative stress. Conclusion. In patients with stage 1-3 cerebral atherosclerosis, an association of some markers of oxidative stress (catalase, SOD, GSH) with telomere length and telomerase activity, regardless of the presence of concomitant type 2 diabetes mellitus, was revealed. In patients with stage 1-3 cerebral atherosclerosis with longer telomeres, catalase levels are statistically significantly higher than in patients with short telomeres. Stage 1-3 cerebral atherosclerosis patients with higher telomerase activity are characterized by statistically significantly lower levels of catalase and superoxide dismutase compared with patients with lower telomerase activity. The most stable direct correlation in this category of patients was found between GSH and telomerase activity (r = 0.48), which may indicate the key role of GSH in the rate of telomere shortening and the development of atherosclerosis.

EVALUATION OF IMMUNOMODULATORY ACTIVITY OF HIBISCUS ROSA SINENSIS (JASWAND) BY ETHANOL-INDUCED IMMUNOSUPPRESSION IN RATS

INDIAN DRUGS ◽  
2014 ◽  
Vol 51 (02) ◽  
pp. 21-28
Author(s):  
◽  
S.S Mulgaonkar ◽  
C. H. Pandey
Keyword(s):  
Oxidative Stress ◽  
Biochemical Parameters ◽  
Ethyl Acetate Extract ◽  
Reduced Glutathione ◽  
Chronic Administration ◽  
Immunomodulatory Activity ◽  
Standard Drug ◽  
Hibiscus Rosa Sinensis ◽  
Markers Of Oxidative Stress ◽  
And Oxidative Stress

The present study was planned to evaluate and compare the immunomodulatory activity of ethyl acetate extract (EAE 100 mg/kg p.o.) and standardized extract of H. rosa sinensis in terms of cyanidin chloride (SEC 4 and 8 mg/kg p.o.) from petals of H. rosa sinensis. Immunosuppression was induced by chronic administration of ethanol whereas treated groups received ethanol concurrently with either extracts or standard drug for 28 days. Biochemical parameters like lipid peroxidation (LPO), reduced glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT) activities were assessed in blood. Spleen and thymus were examined for histopathology. Chronic administration with ethanol showed drastic decrease in the levels of SOD, CAT and GSH but highly raised levels of LPO. Administration of EAE and SEC restored to near normal the markers of oxidative stress which could further prevent ethanol induced damage due to immunological and oxidative stress.

scholarly journals Markers of Oxidative Stress and Inflammation in only Diabetic and Obese Ghanaian Populations: The RODAM Study

2019 ◽  
Vol 9 (1) ◽  
pp. 8-15
Author(s):  
Samuel N. Darko ◽  
William K.B.A. Owiredu ◽  
Denis Yar ◽  
Charles Agyemang ◽  
Erik Beune ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Fasting Blood Glucose ◽  
Glucose Levels ◽  
Reactive Protein ◽  
Stress Markers ◽  
Peripheral Insulin Resistance ◽  
Increase Risk ◽  
Markers Of Oxidative Stress ◽  
Rodam Study ◽  
And Oxidative Stress

Background: The RODAM study has established a link between peripheral insulin resistance and varying fasting blood glucose levels among Ghanaian populations. However, associations of oxidative stress and inflammation with type 2 Diabetes Mellitus (T2DM) and obesity is yet to be assessed in this population. Objective: This study determined the association of inflammatory and oxidative stress markers in T2DM and obesity among Ghanaian migrants in Europe and non-migrants in Ghana. Methods: Socio-demographic and anthropometric variables were collected from 5350 participants of 25-70 years and stratified into migrant Ghanaians (n= 2921), urban (n=1411) and rural Ghanaians (n=1018). C-Reactive Protein (CRP), Uric Acid (UA) and ferritin were quantified and associations drawn between these markers and the metabolic disorders using logistic regression. Results: Overall mean ages (years) were highest for migrant Ghanaians [46.59, 95%CI (46.24, 46.93)] compared to rural [46.49 (45.72, 47.26)] and urban [45.24 (44.65, 45.83)]. CRP was associated with obesity and T2DM respectively in urban [OR=1.531, 95%CI (1.407, 1.666): OR=1.354, 95% CI (1.195, 1.535)] and migrant Ghanaians [OR=1.552, 95% CI (1.449, 1.662): OR=1.405, 95%CI (1.234, 1.600)]. Similarly, ferritin was positively associated (p<0.05) with T2DM in migrant [OR=1.312, 95% CI (1.058, 1.626)], urban [OR=1.972, 95% CI (1.510, 2.575)] and rural Ghanaians [OR=1.240, 95%CI (1.020, 1.507)]. Conclusion: CRP and ferritin are associated with T2DM in Ghanaian populations at varying magnitudes. Moreover, indulgence in lifestyles that elevate inflammation and oxidative stress has the potential to increase risk of T2DM and obesity among Ghanaian populations.

Preliminary Data Regarding Decreased Catalase Specific Activity in the Tears as a Result of Environmental Stress

2017 ◽  
Vol 68 (1) ◽  
pp. 90-93 ◽  
Author(s):  
Anisia Iuliana Alexa ◽  
Alina Cantemir ◽  
Alin Ciobica ◽  
Ioannis Gardikiotis ◽  
Iulia Antioch ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Dry Eye ◽  
Specific Activity ◽  
Environmental Stressors ◽  
Control Group ◽  
Oxygen Species ◽  
Stress Markers ◽  
The Relationship ◽  
And Oxidative Stress

Oxidative stress represents the imbalance between the production of reactive oxygen species and the organism�s capacity to produce antioxidants. This phenomenon has captured lately a lot of attention, with an additional increased interest being manifested towards the relationship between psychological stress and oxidative stress. In the present study we decided to observe the changes which occur in stress environmental conditions applied to rats subjected to swimming and treadmill exercises, by focusing on a preliminary determination of (CAT) specific activity, an enzyme known to catalyse the decomposition of hydrogen peroxide into water and oxygen, and a valuable antioxidant protector, with possible implications into the dry eye pathology. Our results could suggest a possible dry eye animal model induced through stress and a possible implication of the oxidative stress markers in the occurrence of this ocular pathology, as suggested by the significant decrease in the CAT activity registered in rat tears collected after the application of environmental stressors (e.g. swimming and running) versus the control group.

Comparison of Salivary Antioxidants and Oxidative Stress Status in Gestational Diabetes Mellitus and Healthy Pregnant Women

2020 ◽  
Vol 20 ◽  
Author(s):  
Fatemeh Ahmadi-Motamayel ◽  
Shima Fathi ◽  
Mohammad Taghi Goodarzi ◽  
Shiva Borzouei ◽  
Jalal Poorolajal ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Gestational Diabetes ◽  
Pregnant Women ◽  
Oxidative Stress Markers ◽  
Blood Samples ◽  
Stress Markers ◽  
Total Antioxidant ◽  
Total Oxidative Stress ◽  
And Oxidative Stress

Background: One of the most common complications of pregnant women is gestational diabetes mellitus (GDM). Oxidative stress can play an important role in GDM. Objective: The aim of this study was to evaluate salivary antioxidants and oxidative stress markers in GDM. Method: Twenty pregnant women with GDM and 20 healthy pregnant women with normal blood glucose test participated in this study. Five mL of unstimulated saliva samples were collected. Spectrophotometric assay was carried out for sialochemical analysis. Stata software was used for data analysis. Results: The GDM group exhibited no significant difference in salivary total antioxidant capacity and malondialdehyde compared to the healthy control group. All of antioxidants markers, the uric acid, total antioxidant, peroxidase and catalase, decreased in GDM group that the difference of peroxidase and catalase was statistically significant. All of oxidative stress markers, the salivary malondyaldehid, total oxidative stress and total thiol, increased in GDM group. GDM group exhibited significantly higher salivary total oxidative stress levels. Conclusion: Catalase level was significantly lower and total oxidative stress was significantly higher. These two markers might have significant importance and might exhibit early changes compared to other factors in GDM. . Some of salivary antioxidants might have diagnostic, prognostic or therapeutic implications in GDM. Other studies with large sample size on salivary and blood samples need to be done to confirm this properties and salivary samples using instead of blood samples in GDM biomarkers changes.

Astaxanthin, the Natural Antioxidant, Reduces Reserpine Induced Depression in Mice

2020 ◽  
Vol 16 (9) ◽  
pp. 1319-1327
Author(s):  
Ferdous Khan ◽  
Syed A. Kuddus ◽  
Md. H. Shohag ◽  
Hasan M. Reza ◽  
Murad Hossain
Keyword(s):  
Oxidative Stress ◽  
Nitric Oxide ◽  
Reduced Glutathione ◽  
Forced Swim Test ◽  
Tail Suspension Test ◽  
Glutathione Depletion ◽  
Swim Test ◽  
Stress Markers ◽  
Immobility Time ◽  
Biochemical Level

Background: An imbalance between pro-oxidants and antioxidants determines the level of oxidative stress which is implicated in the etiopathogenesis of various neuropsychiatric disorders including depression. Therefore, treatment with antioxidants could potentially improve the balance between pro-oxidants and antioxidants. Objective: The objective of this study was to evaluate the ability of astaxanthin, a potential antioxidant, to reduce reserpine-induced depression in BALB/c mice (Mus musculus). Methods: On the behavioral level, antidepressant property of astaxanthin (50 mg/kg, orally) on reserpine (2 mg/kg, subcutaneously) induced depressed mice was evaluated by Forced Swim Test (FST) and Tail Suspension Test (TST). In the biochemical level, the ability of astaxanthin to mitigate reserpine-induced oxidative stress was evaluated by the measurement of Malondialdehyde (MDA) and nitric oxide (NO) in brain, liver and plasma samples. On the other hand, the efficiency of astaxanthin to replenish glutathione depletion and antioxidant enzyme activity augmentation in the same samples were also investigated. Results: Astaxanthin was able to lower reserpine induced immobility time significantly (p<0.05) in FST and TST. Mice treated with astaxanthin showed significantly (p<0.05) low level of oxidative stress markers such as Malondialdehyde (MDA), Nitric Oxide (NO). Consistently, the level of reduced Glutathione (GSH), and the activity of Superoxide Dismutase (SOD) and catalase were augmented due to the oral administration of astaxanthin. Conclusion: This study suggests that astaxanthin reduces reserpine-induced oxidative stress and therefore might be effective in treating oxidative stress associated depression.

Evaluation of Salivary Antioxidants and Oxidative Stress Markers in Type 2 Diabetes Mellitus: A Retrospective Cohort Study

2020 ◽  
Vol 20 (4) ◽  
pp. 584-590 ◽  
Author(s):  
Shima Fathi ◽  
Shiva Borzouei ◽  
Mohammad Taghi Goodarzi ◽  
Jalal Poorolajal ◽  
Fatemeh Ahmadi-Motamayel
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Control Group ◽  
Oxidative Stress Markers ◽  
Stress Markers ◽  
Type 2 Dm ◽  
Patients With Diabetes ◽  
The Difference ◽  
And Oxidative Stress

Background: Diabetes Mellitus (DM) is a progressive metabolic disorder. Objective: The aim of this study was to investigate the relationship between antioxidant and oxidative stress markers in the saliva of patients with type 2 DM and a healthy control group. Methods: In this study, 20 patients with diabetes and 20 healthy individuals were evaluated. Salivary antioxidants markers consisted of total antioxidant capacity (TAC), uric acid (UA), peroxidase and catalase. Oxidative stress markers included total oxidant status (TOS), malondealdehyde (MDA) and total thiol (SH). Sialochemical analysis was performed with spectrophotometric assay. All the statistical analyses were conducted using STATA software. Results: TAC decreased significantly in patients with diabetes. Although salivary UA and peroxidase were lower in patients with diabetes compared to the control group, the difference was not significant. Salivary catalase in patients with diabetes was significantly lower than that in the control group. MDA and TOS exhibited significantly higher levels in type 2 DM. SH levels were slightly higher in DM. Conclusions: According to the results of the present study, there were some changes in the salivary levels of some antioxidants and oxidative stress markers in patients with type 2 DM and could be measured as an indicator of serum changes..

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